<form action="ser_upload"  method="post" enctype="multipart/form-data">  
       username:<input type="text" name="username" /><br/>  
       password:<input type="password" name="password"/><br/>  
       file1:<input type="file" name="file1"/><br/>  
       file2:<input type="file" name="file2"/><br/>  
	   <input type="hidden" name="seraction" value="serimportbat">
       <input type="submit" name="submit" value="submit"/>  
</form> 